The new content from Demise of the Faithful is available immediately in the in-game store. DLC is available on Steam / Playstation Store EU / Playstation Store NA / XBOX
Patch Notes: https://forum.deadbydaylight.com/en/categories/patch-notes
Emblem blogpost: https://forum.deadbydaylight.com/en/discussion/52295/the-emblem-system-changes-explained#latest
I'm mostly a killer main and I always wanted a "Random" button that would pick a random character off the list without you knowing until the game starts. This will mainly serve to add some suspense and challenge to the game because you won't know if you're getting a good or bad killer until you're locked into the trial with no way to get out of it. It could also increase killer variety.
This option should also be available for survivors but I think that'll be pointless since survivors are just skins atm.